Boost may not be allowed.
I know the mud bogs here in WV do not allow boost or nitrous for insurance reasons.
About 30 years ago a throttle stuck on a blown Ford set up like the OP's truck, it climbed out of the pit and ran over a lady sitting in a lawn chair, killed her. Sad day at the races.
I was there and still remember the look on her face before the truck hit her.
